DES MOINES, Wash. -- Local residents were outraged after learning four high-risk sex offenders were living in a single home in their neighborhood.

The home is the largest concentration of rapists and child molesters the city has ever seen.

On Wednesday, more than 80 residents showed up at the police department to learn about the dangers of living near sex offenders. Residents are also concerned that more offenders may move in.

Frustration flew from neighbors trying to understand how three career rapists and a child molester could be allowed to move in together.

"My question is how many sex offenders can move into that location when they are just renting to individual people?" said neighbor Lisa Schubert-Cannon.

Police say the four men have served their time, and therefore their hands are tied.

"We as a police department don't have any say over where an offender can or cannot live," said Cmdr. John O'Leary.

Pastor Bob Faulk invited the sex offenders to live at the home operated by his church, House of Mercy. He refused to comment.

City officials said they're working with the church and are hoping to reach a solution.

"They did not come to the city ahead of time. They did not say 'this is what we want to do.' There are some issues with regard to the house that we are looking at," said Asst. Chief Attorney Susan Mahoney.

Police said they need neighbors to help keep an eye on the men so they do not harm anyone else. Residents, meanwhile, have doubts about whether the pastor's church will be a good neighbor.

"I'm sure that they are doing this from the goodness of their heart. I don't necessarily agree with it," said area business owner Michelle Fawcett.

A fifth sex offender also used to live at the home, but he has since moved to Tukwila.